Finding the Fourth Proportional to 3,617.78, 5,426.88 and 1,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,617.78 : 5,426.88 = 1,020.50 : x
2. Step 2: Convert to fraction form
   3,617.78/5,426.88 = 1,020.50/x
3. Step 3: Cross multiply
   3,617.78x = 5,426.88 × 1,020.50
4. Step 4: Simplify right side
   3,617.78x = 5,538,131.04
5. Step 5: Solve for x
   x = 5,538,131.04/3,617.78
6. Step 6: Final answer
   x = 1,530.81